EP4015656A4 - Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank - Google Patents

Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank Download PDF

Info

Publication number
EP4015656A4
EP4015656A4 EP19941541.5A EP19941541A EP4015656A4 EP 4015656 A4 EP4015656 A4 EP 4015656A4 EP 19941541 A EP19941541 A EP 19941541A EP 4015656 A4 EP4015656 A4 EP 4015656A4
Authority
EP
European Patent Office
Prior art keywords
low
temperature high
resistant container
casting blank
producing ultra
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19941541.5A
Other languages
German (de)
French (fr)
Other versions
EP4015656A1 (en
Inventor
Jianping Zheng
Bingjun ZHANG
Lei Fang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Iron and Steel Co Ltd
Original Assignee
Nanjing Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Iron and Steel Co Ltd filed Critical Nanjing Iron and Steel Co Ltd
Publication of EP4015656A1 publication Critical patent/EP4015656A1/en
Publication of EP4015656A4 publication Critical patent/EP4015656A4/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving particular fabrication steps or treatments of ingots or slabs
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
EP19941541.5A 2019-08-14 2019-12-04 Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank Pending EP4015656A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910752432.0A CN110564921B (en) 2019-08-14 2019-08-14 Method for producing ultralow-temperature high-strength acid-resistant container steel by casting blank
PCT/CN2019/122910 WO2021027188A1 (en) 2019-08-14 2019-12-04 Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank

Publications (2)

Publication Number Publication Date
EP4015656A1 EP4015656A1 (en) 2022-06-22
EP4015656A4 true EP4015656A4 (en) 2022-12-14

Family

ID=68775335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19941541.5A Pending EP4015656A4 (en) 2019-08-14 2019-12-04 Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank

Country Status (3)

Country Link
EP (1) EP4015656A4 (en)
CN (1) CN110564921B (en)
WO (1) WO2021027188A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111270162B (en) * 2020-03-19 2022-02-08 安徽工业大学 Medium-thickness low-temperature high-core impact A537CL2 container steel plate and production method thereof
CN111270159B (en) * 2020-03-19 2021-08-17 安徽工业大学 A kind of ultra-low temperature high strength A537CL2 container steel plate and production method thereof
CN111349854B (en) * 2020-03-19 2022-02-08 安徽工业大学 Large-thickness low-compression-ratio high-die-welding low-temperature container steel plate and production method thereof
CN112647021B (en) * 2020-12-09 2021-10-15 上海电气上重铸锻有限公司 High-strength 9% Ni steel for ultra-low temperature engineering fasteners and preparation method thereof
CN113737090B (en) * 2021-07-22 2022-10-18 中船双瑞(洛阳)特种装备股份有限公司 High-strength and high-toughness alloy structural steel and preparation method thereof
CN116145033B (en) * 2022-12-30 2024-02-02 北京科技大学 Ultrahigh-toughness low-temperature pressure vessel steel plate and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107267862A (en) * 2017-05-31 2017-10-20 舞阳钢铁有限责任公司 570MPa grades of special thick high-toughness and low-temperature military service pipe fitting steel plates and production method
CN107557664A (en) * 2017-08-21 2018-01-09 包头钢铁(集团)有限责任公司 A kind of anticorrosive Hi-grade steel submarine seamless line pipe and its manufacture method
CN108950395A (en) * 2018-08-07 2018-12-07 南京钢铁股份有限公司 A kind of method that slab produces big thickness 08Ni3DR low-temperature (low temperature) vessel steel
CN109930066A (en) * 2019-03-15 2019-06-25 包头钢铁(集团)有限责任公司 A kind of hydrogen sulfide corrosion resistant low temperature seamless line pipe and preparation method thereof
CN110565013A (en) * 2019-08-14 2019-12-13 南京钢铁股份有限公司 A method for producing ultra-low temperature and high core impact value acid-resistant container steel from billet

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001342519A (en) * 2000-06-01 2001-12-14 Toa Valve Co Ltd Method of preventing distortion of austenitic stainless steel members
JP2002327213A (en) * 2001-04-27 2002-11-15 Nsk Ltd Method of manufacturing rolling device
CN104233061B (en) * 2014-10-08 2016-08-24 南京钢铁股份有限公司 A kind of low temperature low surrender steel and production method thereof
CN106591718A (en) * 2016-12-02 2017-04-26 舞阳钢铁有限责任公司 High-toughness antiacid quenched and tempered pipe steel plate with yield strength being 420 MPa grade and production method
CN108660384A (en) * 2017-03-30 2018-10-16 宝山钢铁股份有限公司 A kind of low-alloy steel of sulfuric acid corrosion resistant, steel pipe, steel plate and its manufacturing method
CN108342649B (en) * 2018-03-27 2020-08-04 武汉钢铁有限公司 Acid-corrosion-resistant quenched and tempered high-strength pressure vessel steel and production method
CN109161790A (en) * 2018-08-22 2019-01-08 江阴兴澄特种钢铁有限公司 The high-level high tenacity pipe fitting steel plate and its manufacturing method used under a kind of acid condition
CN108998736A (en) * 2018-09-05 2018-12-14 合肥久新不锈钢厨具有限公司 A kind of wear resistant corrosion resistant stainless steel cup material and preparation method thereof
CN110331334B (en) * 2019-07-16 2021-03-16 武汉科技大学 Corrosion-resistant ocean engineering steel with yield strength of more than or equal to 890MPa and production method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107267862A (en) * 2017-05-31 2017-10-20 舞阳钢铁有限责任公司 570MPa grades of special thick high-toughness and low-temperature military service pipe fitting steel plates and production method
CN107557664A (en) * 2017-08-21 2018-01-09 包头钢铁(集团)有限责任公司 A kind of anticorrosive Hi-grade steel submarine seamless line pipe and its manufacture method
CN108950395A (en) * 2018-08-07 2018-12-07 南京钢铁股份有限公司 A kind of method that slab produces big thickness 08Ni3DR low-temperature (low temperature) vessel steel
CN109930066A (en) * 2019-03-15 2019-06-25 包头钢铁(集团)有限责任公司 A kind of hydrogen sulfide corrosion resistant low temperature seamless line pipe and preparation method thereof
CN110565013A (en) * 2019-08-14 2019-12-13 南京钢铁股份有限公司 A method for producing ultra-low temperature and high core impact value acid-resistant container steel from billet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021027188A1 *

Also Published As

Publication number Publication date
CN110564921B (en) 2021-08-10
WO2021027188A1 (en) 2021-02-18
EP4015656A1 (en) 2022-06-22
CN110564921A (en) 2019-12-13

Similar Documents

Publication Publication Date Title
EP4159879A4 (en) Method for producing reduced iron
ZA202104103B (en) Method for producing a welded steel blank and associated welded steel blank
EP4015666A4 (en) Method for producing multi-stage structural steel blank for one steel
PL3352940T3 (en) Method of laser welding for producing a semi-finished sheet of hardenable steel with a coating of aluminium or aluminium-silicon base
EP3278917A4 (en) Method for spot welding of plated steel sheet
ZA202005285B (en) Method for producing a welded metal blank and thus obtained welded metal blank
EP3932586A4 (en) STEEL CONTINUOUS CASTING PROCESS
EP3726601B8 (en) Surface-treated steel sheet for battery containers and method for producing surface-treated steel sheet for battery containers
ZA202205543B (en) Method for producing molten steel
PT3247811T (en) Plant for recycling of white slag generated during a steel production step
PL3481972T3 (en) Method for producing high yield strength steel
EP3909703A4 (en) Method for continuous casting of slab
ZA202200328B (en) Method for producing a steel part and steel part
NO20190144A1 (en) A process for production of aluminium
EP3252189A4 (en) Surface-treated steel plate, metal container, and method for producing surface-treated steel plate
GB202203207D0 (en) MEthod for producing hydrigen by iodine-selenium thermochemicalcycle phosphorus reduction
PL3467138T3 (en) Method for forming aluminum alloy blank
EP4324940A4 (en) Method for dephosphorization of molten metal
SG11202112396VA (en) Method for producing hydraulic composition
ZA202101082B (en) Method for improving the formability of steel blanks
PL3542915T3 (en) Method for controlling a production system of a rolling mill
PL4039831T3 (en) Molten steel production method
EP3889276A4 (en) High-manganese steel cast slab production method and method for producing billet or sheet of high-manganese steel
TWI925866B (en) Manufacturing method for metal filled microstructure
MX2019009090A (en) Recycled aluminum rod.

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220302

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20221111

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 8/02 20060101ALI20221107BHEP

Ipc: C21D 6/04 20060101ALI20221107BHEP

Ipc: C21D 6/00 20060101ALI20221107BHEP

Ipc: C21D 1/18 20060101AFI20221107BHEP